cluster     1   number of spheres in cluster    21
    1  -1.61000  13.18600  17.13600   0.700    1                                
    2  -1.82900  15.27900  15.94200   0.700    2                                
    3   3.29400  19.23400  20.25300   0.700    3                                
    4   1.87800  20.34800  21.86800   0.700    4                                
    5  -1.33500  13.86800  18.31400   0.700    5                                
    6  -1.55300  15.95800  17.12500   0.700    6                                
    7   2.23600  18.40700  19.87500   0.700    7                                
    8   0.81700  19.52700  21.49500   0.700    8                                
    9  -1.85700  13.88400  15.95300   0.700    9                                
   10   3.12100  20.20400  21.24800   0.700   10                                
   11  -1.30000  15.25700  18.30000   0.700   11                                
   12   0.99500  18.56000  20.49900   0.700   12                                
   13  -2.15700  13.12200  14.69600   0.700   13                                
   14   4.26000  21.09900  21.66500   0.700   14                                
   15  -1.82800  11.84100  14.62500   0.700   15                                
   16   4.36700  21.47000  22.94400   0.700   16                                
   17  -2.72200  13.67800  13.70900   0.700   17                                
   18   5.12400  21.50500  20.83200   0.700   18                                
   19  -1.05300  15.92800  19.43600   0.700   19                                
   20  -0.09800  17.74900  20.17200   0.700   20                                
   21   0.03600  16.62900  19.65800   0.700   21